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Finding the Fourth Proportional to 286,666.72, 430,001.02 and 86,988.76

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Solution

The fourth proportional to 286,666.72, 430,001.02 and 86,988.76 is: 130,483.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,666.72 : 430,001.02 = 86,988.76 : x
  2. Step 2: Convert to fraction form
    286,666.72/430,001.02 = 86,988.76/x
  3. Step 3: Cross multiply
    286,666.72x = 430,001.02 × 86,988.76
  4. Step 4: Simplify right side
    286,666.72x = 37,405,255,528.54
  5. Step 5: Solve for x
    x = 37,405,255,528.54/286,666.72
  6. Step 6: Final answer
    x = 130,483.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.